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