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