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