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