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