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