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