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