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