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