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