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