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