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)(20,30)(21,32)(22,26)(23,27)(25,28)(29,31)(1,3,4,8)(2,5,6,7)(17,18)(19,25)(20,31)(21,26)(22,32)(23,27)(24,28)(29,30)(10,13)(14,16)(17,19,21,20,23,29,22,28)(18,24,32,30,27,31,26,25)(17,20,22,19,23,28,21,29)(18,25,26,31,27,30,32,24)(9,11,12,15)(10,14,13,16)(17,21,23,22)(18,26,27,32)(19,20,29,28)(24,25,31,30)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.