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