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