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