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