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