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