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