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