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