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