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