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