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