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