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