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