Anyone familiar with classical guitar will know which notes to hang on to, as I don't feel like writing in a second voice. If you are unsure, hold the lowest note of every 3rd note (the start of the triplet.) Get a feel for the song by listening to it on youtube.
This is true to the original score by Bach. There is evidence to suggest that he intedned it to be played quickly and triumphantly, unlike most modern renditions. The triplets throught the song support that idea. 
This file contains two identical guitar parts, the only difference are the effects. Since this is a studio quality file, I added the second track for chorusing and depth.