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