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