One day, I’ll manage to get a solo arrangement of the whole of Bohemian Rhapsody together. But for now you’ll have to content yourself with the riff. The BoRhap riff, like Paranoid, has managed to be one of the world’s most recognisable riffs despite hardly even being there – lasting a grand total of eight bars.
One possible variation on this: In bar 4, I very nearly went with tab a hammer-on from the third to fifth fret and back down (so you’d have to slide your first finger up between the bars). If you’re using a pick to play the riff, you’ll have to do it that way.