Saraikisaurus is pronounced sa-ra-i-ki-SORE-us.
/ˌsæ.rəˌɪ.kɪˈsɔːr.əs/
Capitals mark the stressed syllable.
This pronunciation is built from the Greek and Latin roots of the name, following the usual English way of saying scientific names. The audio is a synthesized voice reading the name, so it can differ slightly from the respelling.
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Where the name comes from
sauro-
/ˈsɔːr.oʊ/
Greek, “sauros, lizard”
IPA from Wiktionary