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