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