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