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