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)(19,27)(20,25)(21,31)(22,24)(23,28)(26,29)(30,32)(1,2)(3,7)(4,5)(6,8)(9,10)(11,14)(12,15)(13,16)(17,19,22,28)(18,23,24,27)(20,29,30,21)(25,31,32,26)(2,5)(6,7)(9,11,13,12)(10,14,16,15)(18,24)(19,28)(20,30)(26,31)(3,8)(6,7)(17,20)(18,25)(19,29)(21,28)(22,30)(23,31)(24,32)(26,27) involution — undirected(1,3,4,8)(2,6,5,7)(17,21,22,29)(18,26,24,31)(19,30,28,20)(23,32,27,25)(1,2)(3,6)(4,5)(7,8)(9,12,13,11)(10,15,16,14)(17,18)(19,23)(20,25)(21,26)(22,24)(27,28)(29,31)(30,32)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.