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