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