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