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