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