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