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