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