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