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