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