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