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