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