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