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