You'll need to consult your owner's manual's diagrams for the Power Distribution Box. The manual will show you a diagram of the box itself, indicating which relay is the fuel pump relay. The relay itself might be labeled, or you might need to trace it based on the diagram. It's usually a fairly standard automotive relay (a small rectangular box).
Without the owner's manual, pinpointing the exact location without pictures is difficult, as there can be slight variations based on options and trim levels.