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