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