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