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