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