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