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