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