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