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