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