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