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