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