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