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