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