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