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