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