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