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