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