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