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