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