This is the way tony iomi plays the song but you can use E5's on the intro to make it sound better.
|-----------------|-------------------|------------|-------------|
|-----------------|-------------------|------------|-------------|
|-----------------|-------------------|-7---3------|-7---3-------|
|-------------3---|-------------10-8--|-7---3---7--|-7---3---7---|
|-------------3---|-------------10-8--|-5---1---7--|-5---1---7---|
|-0-0-0-0-0-0-1---|-0-0-0-0-0-0--8-6--|---------5--|---------5---|

                                     6x                        1x
|-----------------|-------------------|------------|-------------|
|-----------------|-------------------|------------|-------------|
|-----------------|-------------------|-7---3------|-7---3-------|
|-------------3---|-------------10-8--|-7---3---7--|-7---3---7---|
|-------------3---|-------------10-8--|-5---1---7--|-5---1---7---|
|-0-0-0-0-0-0-1---|-0-0-0-0-0-0--8-6--|---------5--|---------5---|


  4/4
   Gtr I                           6x                          1x
|-----------------|-------------------|------------|-------------|
|-----------------|-------------------|------------|-------------|
|-----------------|-------------------|-7---3------|-7---3-------|
|-------------3---|-------------10-8--|-7---3---7--|-7---3---7---|
|-------------3---|-------------10-8--|-5---1---7--|-5---1---7---|
|-0-0-0-0-0-0-1---|-0-0-0-0-0-0--8-6--|---------5--|---------5---|

                                                               8x
|-----------------------------|--------------------------------|
|-----------------------------|--------------------------------|
|-------------------------2---|-------------------------2------|
|-2-4p2-2p0---------------2-4-|-2-4p2-2p0---------------2-4----|
|-----------5p2-4p2-3p2-2-0-4-|-----------5p2-4p2-3p2-2-0-4----|
|---------------------------2-|---------------------------2----|

                          1x
|------------|-------------|
|-7---3------|-7---3-------|
|-7---3---7--|-7---3---7---|
|-5---1---7--|-5---1---7---|
|---------5--|---------5---|