One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,10,13,16)(4,9,14,7)(6,15,11,12)(17,18,21,31,23,27,22,26)(19,28,20,24,30,25,29,32)(1,2,4,7,5,8,14,9)(3,11,12,16,13,6,15,10)(17,19,21,20,23,30,22,29)(18,24,26,28,27,32,31,25)(1,2)(3,11)(4,7)(5,8)(6,13)(9,14)(10,15)(12,16)(17,18,23,27)(19,24,30,32)(20,28,29,25)(21,26,22,31)(1,3,4,12,5,13,14,15)(2,6,7,10,8,11,9,16)(17,20,21,30,23,29,22,19)(18,25,26,24,27,28,31,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.