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)(17,18,21,25,23,19,22,26)(20,28,30,27,31,32,29,24)(1,3,5,4)(2,6,7,8)(9,10,14,13)(11,16,12,15)(17,19,23,18)(20,27,31,24)(21,25,22,26)(28,29,32,30)(1,4,5,3)(2,6,7,8)(9,11,14,12)(10,15,13,16)(17,20,23,31)(18,24,19,27)(21,29,22,30)(25,32,26,28)(9,12,14,11)(10,15,13,16)(17,21,23,22)(18,25,19,26)(20,29,31,30)(24,32,27,28)(9,13,14,10)(11,16,12,15)(17,21,23,22)(18,26,19,25)(20,29,31,30)(24,28,27,32)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.