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