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