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