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