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)(12,16)(17,18,21,22)(19,20,24,23)(27,29)(31,32)(9,10)(11,12)(13,14)(15,16)(18,22)(20,23)(25,26)(27,32)(28,30)(29,31) involution — undirected(2,6)(3,7)(10,14)(11,15)(17,19)(18,23)(20,22)(21,24)(25,27,30,29)(26,31,28,32)(1,3,5,7)(2,4,6,8)(9,11,13,15)(10,12,14,16)(17,19)(18,23)(20,22)(21,24)(25,28,30,26)(27,31,29,32)(1,4)(2,7)(3,6)(5,8)(9,12)(10,15)(11,14)(13,16)(17,20,21,23)(18,19,22,24)(25,29,30,27)(26,31,28,32)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.