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