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