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