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