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