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