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