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