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