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