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