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