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