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