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