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