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