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