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