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