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