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