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