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