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