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