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