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