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