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