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