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