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