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