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