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