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