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)(17,18)(19,23)(20,25)(21,24)(22,26)(27,30)(28,32)(29,31)(1,2)(3,8)(4,7)(5,6)(10,14)(11,12)(17,19,22,21)(18,23,26,24)(20,27,28,29)(25,30,32,31)(9,10)(11,16)(12,15)(13,14)(18,24)(19,21)(20,28)(23,26)(25,30)(31,32) involution — undirected(1,3,5,4)(2,7,6,8)(9,11,13,12)(10,15,14,16)(17,20)(18,25)(19,27)(21,29)(22,28)(23,30)(24,31)(26,32)(1,4,5,3)(2,7,6,8)(9,12,13,11)(10,15,14,16)(18,26)(20,28)(23,24)(27,29)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.