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