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