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