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