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