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