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