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