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