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)(11,13)(12,14)(15,16)(17,18,22,27,20,25,24,32,21,26,30,31,23,19,28,29)(2,5)(6,8)(9,11,12,15)(10,13,14,16)(17,19,22,29,20,18,24,27,21,25,30,32,23,26,28,31)(3,7)(6,8)(10,14)(13,16)(17,19)(18,23)(20,26)(21,25)(22,31)(24,32)(27,30)(28,29) involution — undirected(1,3,4,7)(2,6,5,8)(17,20,21,23)(18,25,26,19)(22,24,30,28)(27,32,31,29)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.