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