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