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