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