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