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