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