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