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