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