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