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