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