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