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