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