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)(11,13)(12,14)(15,16)(17,18,24,31,22,20,23,27)(19,28,32,30,29,25,21,26)(1,3)(2,6)(4,7)(5,8)(9,10)(11,15)(12,14)(13,16)(17,19)(18,25)(20,28)(21,23)(22,29)(24,32)(26,31)(27,30) involution — undirected(9,11)(10,13)(12,16)(14,15)(17,20,22,18)(19,28,29,25)(21,30,32,26)(23,27,24,31)(1,2,5,4)(3,7,8,6)(11,16)(13,15)(17,21)(18,26)(19,24)(20,30)(22,32)(23,29)(25,27)(28,31)(1,4,5,2)(3,7,8,6)(10,14)(13,15)(19,29)(21,32)(25,28)(26,30)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.