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