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