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