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