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