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