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