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