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