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