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