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