Generally speaking, both of the presidents (Truman and Eisenhower) were in favor of African American civil rights and were opposed to discrimination and segregation. In fact, both of them took important steps in support of civil rights.
These two presidents, however differ in their attitudes, when it comes to the issue of using law to end segregation and discrimination. Unlike Truman, Eisenhower is known for his doubts on this issue. He was of the notion that it was impossible to force people to change by changing laws. This difference could actually have been because Eisenhower was in office at a time when more activism was occurring, while activism was not the order of the day during Truman's time.