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