The coach will see you as a person and not just an anonymous face with stripes. You might even get the opportunity to discuss officiating philosophies. Don't go seeking out team personnel but don't shy away from an opportunity if it presents itself. This type of interaction leads to a mutual respect between both parties. Read the line-up cards, learn the names of players and coaches.
People are much more receptive when addressed by name.
If a situation arises on the ice calling for multiple penalties or something out of the ordinary, take the opportunity to go to the bench and explain it directly to the coach or coaches. This will eliminate the chance of a misunderstanding by having the captain relay the message second-hand. Try to be brief and avoid long-winded conversations. Explain what is being assessed and why, then leave. Don't get sucked into allowing him to challenge your ruling.