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