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