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