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