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