One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,5)(7,8)(9,10)(11,13)(12,14)(15,16)(17,18,24,28)(19,22,27,23)(20,30,29,25)(21,26,31,32)(2,5)(3,7)(9,10)(11,15)(12,14)(13,16)(17,19,23,18,24,27,22,28)(20,31,26,30,29,21,32,25)(2,5)(6,8)(9,11,12,16)(10,13,14,15)(17,20,24,29)(18,25,28,30)(19,21,27,31)(22,32,23,26)(1,3,4,7)(2,6,5,8)(11,16)(13,15)(17,21,24,31)(18,26,28,32)(19,29,27,20)(22,25,23,30)(10,14)(13,15)(17,22,24,23)(18,19,28,27)(20,26,29,32)(21,25,31,30)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.