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