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