Glavni rezultat tega članka je klasifikacija razdaljno-regularnih Cayleyjevih grafov na diedrskih grupah. Naslednje štiri družine takšnih razdaljno-regularnih grafov bomo imenovali trivialne: polni ...grafi, polni dvodelni grafi, polni dvodelni grafi brez 1-faktorja in cikli. V članku dokažemo, da je vsak netrivialen Cayleyjev razdaljno-regularen graf na diedrski grupi dvodelen, neantipoden, premera 3, ter da je porojen iz ciklične diferenčne množice ali iz diedrske diferenčne množice, ki zadošča nekaterim dodatnim pogojem (če kakšna taka sploh obstaja). Poiščemo tudi vse Cayleyeve razdaljno-tranzitivne grafe na diedrskih grupah. Izkaže se, da je Cayleyjev graf na diedrski grupi razdaljno-tranzitiven natanko takrat ko je trivialen, ali pa izomorfen bodisi incidenčnemu bodisi neincidenčnemu grafu projektivnega prostora ▫$\mathrm{PG}_{d-1} (d,q)$▫, ▫$d \ge 2$▫, ali enolično določenega komplementarnega para simetričnih načrtov na enajstih točkah.
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