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