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