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