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