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