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