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