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