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