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