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