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