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