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