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