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