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