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