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)(17,18,21,24,22,25,31,23)(19,26,28,30,29,32,27,20)(1,2)(3,4)(10,13)(11,15)(17,19,22,29)(18,20,25,30)(21,27,31,28)(23,26,24,32)(2,4)(10,13)(14,16)(17,20,22,30)(18,19,25,29)(21,26,31,32)(23,27,24,28)(6,8)(9,11,12,15)(10,14,13,16)(18,23)(19,27)(21,31)(24,25)(26,32)(28,29)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.