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