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