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