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