One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,10)(4,13)(5,9)(6,15)(7,12)(8,11)(14,16)(17,18,23,25)(19,26,28,30)(20,27,31,21)(22,29,32,24)(1,3,7,13)(2,9,12,16)(4,15,10,11)(5,6,14,8)(17,19)(18,20)(21,32)(22,27)(23,28)(24,30)(25,31)(26,29)(1,4,7,10)(2,3,12,13)(5,15,14,11)(6,9,8,16)(17,20,23,31)(18,19,25,28)(21,29,27,24)(22,26,32,30)(1,5,6,13,7,14,8,3)(2,10,11,16,12,4,15,9)(17,21,32,19,23,27,22,28)(18,20,29,30,25,31,24,26)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.