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