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