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