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