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