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