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