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