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)(11,12,16,14)(18,21)(19,23)(27,31)(28,32)(1,3,4,8)(2,5,6,7)(9,11)(10,14)(12,15)(13,16)(18,21)(22,24)(25,26,29,30)(27,32,31,28)(2,6)(5,7)(10,15)(11,16)(17,18)(19,22)(20,21)(23,24)(25,27)(26,28)(29,31)(30,32) involution — undirected(1,2)(3,7)(4,6)(5,8)(9,10)(11,12)(13,15)(14,16)(17,18)(19,22)(20,21)(23,24)(25,26)(27,28)(29,30)(31,32) involution — undirected(1,3)(2,7)(4,8)(5,6)(9,12)(10,11)(13,14)(15,16)(17,19)(18,22)(20,23)(21,24)(25,28)(26,27)(29,32)(30,31) 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.