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