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)(11,12)(13,14)(15,16)(17,18,21,20)(19,23,24,22)(25,26)(27,29)(28,31)(30,32)(1,3,5,4)(2,6,7,8)(10,14)(12,15)(17,19,21,24)(18,22,20,23)(25,27,30,31)(26,29,32,28)(9,10,13,14)(11,15,16,12)(17,19)(18,23)(20,22)(21,24)(25,27)(26,28)(29,32)(30,31)(1,4,5,3)(2,6,7,8)(9,11)(10,15)(12,14)(13,16)(25,28,30,29)(26,31,32,27)(1,2)(3,8)(4,6)(5,7)(9,12,13,15)(10,11,14,16)(17,20,21,18)(19,22,24,23)(25,29,30,28)(26,27,32,31)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.