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