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)(17,18,22,23)(19,21,26,31)(20,27,29,24)(25,30,32,28)(1,2,4,5)(3,6,7,8)(17,19)(18,21)(20,28)(22,26)(23,31)(24,32)(25,27)(29,30)(9,11,13,12)(10,14,15,16)(17,20,18,24,22,29,23,27)(19,25,31,30,26,32,21,28)(1,3,4,7)(2,6,5,8)(20,29)(24,27)(25,32)(28,30)(2,5)(6,8)(9,12,13,11)(10,14,15,16)(17,21,18,19,22,31,23,26)(20,30,24,32,29,28,27,25)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.