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