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