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