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