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