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