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