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