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)(11,13)(12,14)(15,16)(17,18,20,26,22,27,21,23)(19,25,29,24,30,31,28,32)(2,5)(6,8)(9,11)(10,13)(12,15)(14,16)(18,23)(20,21)(24,31)(25,32)(26,27)(28,29) involution — undirected(11,15)(13,16)(17,19)(18,24)(20,28)(21,29)(22,30)(23,31)(25,26)(27,32) involution — undirected(1,3,4,7)(2,6,5,8)(10,14)(13,16)(17,19)(18,25)(20,29)(21,28)(22,30)(23,32)(24,26)(27,31)(17,20,22,21)(18,26,27,23)(19,28,30,29)(24,25,32,31)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.