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