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