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