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