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