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