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