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