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