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)(19,22)(20,27)(21,25)(23,26)(24,29)(28,32)(30,31)(1,2)(3,8)(4,6)(5,7)(9,10)(11,15)(12,14)(13,16)(17,19,21,26)(18,23,25,22)(20,27,28,32)(24,29,31,30)(9,11)(10,13)(12,16)(14,15)(17,20,21,28)(18,24,25,31)(19,27,26,32)(22,30,23,29)(1,3,5,4)(2,6,7,8)(10,14)(11,16)(17,18)(19,23)(20,24)(21,25)(22,26)(27,29)(28,31)(30,32)(1,4,5,3)(2,6,7,8)(10,14)(13,15)(18,25)(19,26)(20,28)(29,30)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.