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