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