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