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