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