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