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