One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,8)(5,7)(9,10,12,14)(11,15,16,13)(17,18,21,23)(19,26,25,22)(20,28,29,24)(27,30,31,32)(1,2,6,3)(4,7,5,8)(9,11,12,16)(10,13,14,15)(18,23)(19,25)(24,28)(27,31)(1,3,6,2)(4,7,5,8)(11,16)(13,15)(17,19,22,18,21,25,26,23)(20,27,30,24,29,31,32,28)(1,4,6,5)(2,7,3,8)(10,14)(13,15)(17,20,21,29)(18,24,23,28)(19,27,25,31)(22,30,26,32)(1,5,6,4)(2,7,3,8)(20,29)(24,28)(27,31)(30,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.