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