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