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