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