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