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