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