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