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