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