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