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