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