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