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