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