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