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