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