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