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