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