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