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)(17,18,21,23)(19,25,26,32)(20,29,30,24)(22,27,31,28)(10,13)(11,15)(17,19)(18,22)(20,27)(21,26)(23,31)(24,32)(25,29)(28,30) involution — undirected(2,5)(6,8)(9,10)(11,14)(12,13)(15,16)(18,23)(19,26)(24,29)(27,28) involution — undirected(1,3,4,7)(2,6,5,8)(10,13)(14,16)(18,23)(19,27)(20,30)(22,25)(26,28)(31,32)(9,11,12,15)(10,14,13,16)(18,23)(19,26)(24,29)(27,28)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.