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