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