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