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