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