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