There are no 32-bit drivers for Win 7 at Dell as they didn't sell the N5010 with a 32-bit option. The basic 64-bit drivers (chipset, etc.) should be OK with 32-bit Win 64. All the drivers for other features such as video, sound, wi-fi ,etc. will need to be obtained from the manufacturer of that particular hardware.
XPS M1530, Win 10 CU Pro 32-bit
Inspiron E1705, Win 10 CU Pro 32-bit
Dimension 9100, Win 10 AU Pro 32 bit
Inspiron 660, Win 10 CU 64 bit
Inspiron 3668, Win 10 CU 64 bit
Asus T100 Tablet, Windows 10 CU 32 bit
Inspiron N5010 drivers can be downloaded from the below link. Please note that Dell only supports 64 Bit operating system for this model and the 32 Bit drivers need to be obtained from the manufacturer of that particular hardware.
Also find the link for How to download and Install Drivers in the Correct Order.
Thanks and Regards