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)(11,14)(12,16)(13,15)(17,18,24,20,23,28,22,27)(19,25,30,29,31,21,26,32)(9,11,14,10)(12,16,13,15)(17,19,24,30,23,31,22,26)(18,25,20,29,28,21,27,32)(2,5)(6,8)(9,12,14,13)(10,15,11,16)(17,20,24,28,23,27,22,18)(19,29,30,21,31,32,26,25)(9,12,14,13)(10,16,11,15)(17,21)(18,26)(19,20)(22,29)(23,25)(24,32)(27,31)(28,30)(1,3,4,7)(2,6,5,8)(9,13,14,12)(10,16,11,15)(17,22,23,24)(18,27,28,20)(19,30,31,26)(21,32,25,29)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.