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