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