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