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