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