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