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