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