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