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