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