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