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