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