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