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