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