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