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