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