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