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