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