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