No regulator there - you will need to add level shifters and connect the sensor to the 3.3V power of the Arduino.
The connection diagram shown is bad: this sensor is not 5V tolerant, the SDA and SCL lines will be pulled to +5V and that may damage the sensor, even though the resistors may help preventing that from actually happening (the maximum possible current is highly limited) it's overall simply not a good idea.
SPI is worse, that will almost certainly damage the sensor as SPI is actually driven high, not gently pulled high through a resistor.