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