The university website has detailed access information in Japanese, and a simple map in English or just bookmark the Google Map. The closest rail station is JR Matsuyama. There is a tram line which runs from Matsuyama Station to the university. The nearest stop is called Teppou-cho (鉄砲町). It’s a five-minute walk from the tram stop to the conference site.
Matsuyama Castle (near the conference site)
Photo credit: Brian Miller, Flickr (CC BY 2.0)