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)(11,12)(13,16)(14,15)(17,18,22,20)(19,25,27,23)(21,24,30,28)(26,32,29,31)(1,3,6,4)(2,7,5,8)(9,11,13,15)(10,12,16,14)(17,19)(18,23)(20,25)(21,29)(22,27)(24,32)(26,30)(28,31)(9,11)(10,14)(12,16)(13,15)(18,20)(23,25)(24,28)(31,32) involution — undirected(9,10,13,16)(11,12,15,14)(17,20,22,18)(19,25,27,23)(21,28,30,24)(26,32,29,31)(1,4,6,3)(2,7,5,8)(9,11)(10,12)(13,15)(14,16)(17,21,22,30)(18,24,20,28)(19,26,27,29)(23,31,25,32)(1,5,6,2)(3,8,4,7)(9,12)(10,15)(11,16)(13,14)(17,19)(18,23)(20,25)(21,29)(22,27)(24,32)(26,30)(28,31)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.