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