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