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