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