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