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