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