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