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