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