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