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