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