Past the SmallGroups library coverage — no SmallGroups id. Construct it from a minimal faithful permutation representation:
gap> G := Group((1,16,20)(2,8,5)(3,23,11)(4,24,10)(6,19,17)(7,28,15)(12,27,13)(18,26,21), (1,24,11,13,26,22,23,4,8,18,25,16,21,17,2,5,27,14,12,19,3,20,7,15,10,6,28,9));