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