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