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