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