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