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