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)(11,13)(12,15)(14,16)(17,18,22,23)(19,21,20,24)(25,26,28,31)(27,30,32,29)(12,16)(14,15)(17,19,22,20)(18,21,23,24)(25,27)(26,29)(28,32)(30,31)(10,11)(14,15)(18,23)(19,20)(27,32)(29,30) involution — undirected(1,2)(3,5)(4,6)(7,8)(9,11,13,10)(12,15,16,14)(17,20,22,19)(18,21,23,24)(25,26)(27,29)(28,31)(30,32)(1,3,4,7)(2,5,6,8)(9,12,13,16)(10,14,11,15)(17,21)(18,19)(20,23)(22,24)(25,27)(26,30)(28,32)(29,31)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.