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