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