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