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