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