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