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