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)(19,25)(20,29)(24,31)(27,28)(30,32)(1,3,4,12,6,11,5,13)(2,7,8,10,9,15,14,16)(17,18,20,22,21,24,29,31)(19,26,27,32,28,23,25,30)(3,11)(7,15)(10,16)(12,13)(17,19)(18,23)(20,27)(21,28)(22,30)(24,26)(25,29)(31,32) involution — undirected(18,24)(22,31)(23,26)(30,32) 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.