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