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