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