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