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