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