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