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