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