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