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