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