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