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