Level 3 Bids for Williams Comms Wed Jul 24, 3:21 PM ET NEW YORK (Reuters) - Level 3 Communications Group Inc. , which recently received a cash infusion from billionaire Warren Buffett, has offered to buy Williams Communications Group Inc., for about $1.08 billion, a person familiar with the situation said on Wednesday. A Williams spokesperson confirmed that it had received a bid from Level 3, but declined to disclose other details. The offer was one of a number of bids that Williams, based in Tulsa, Oklahoma, has received, the spokeswoman said. Level 3 officials, attending the company's annual shareholder...