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)(18,23)(20,21)(24,29)(25,30)(26,28)(31,32)(1,3)(2,6)(4,7)(5,8)(10,11)(12,13)(18,24)(23,29)(25,31)(30,32) involution — undirected(9,11,14,10)(12,15,13,16)(17,18)(19,25)(20,23)(21,29)(22,24)(26,32)(27,31)(28,30)(3,8)(6,7)(9,12,14,13)(10,15,11,16)(17,19,22,27)(18,25,24,31)(20,28,21,26)(23,30,29,32)(1,4,5,2)(3,7,8,6)(9,13,14,12)(10,15,11,16)(17,20,22,21)(18,23,24,29)(19,26,27,28)(25,32,31,30)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.