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