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