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