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