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