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