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