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