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