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