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