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