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