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