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