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