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