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