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