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