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