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