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)(17,18,22,20)(19,26,28,24)(21,30,23,25)(27,29,32,31)(1,2)(3,6)(4,8)(5,7)(9,11,12,15)(10,13,14,16)(17,19)(18,24)(20,26)(21,29)(22,28)(23,31)(25,32)(27,30)(10,14)(13,16)(17,20,22,18)(19,27,28,32)(21,30,23,25)(24,31,26,29)(1,3,5,4)(2,6,7,8)(18,20)(24,26)(25,30)(27,32)(1,4,5,3)(2,6,7,8)(17,21)(18,25)(20,30)(22,23)(24,26)(29,31)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.