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