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