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