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