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