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