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