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