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