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