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)(15,22)(16,25)(17,20)(18,28)(19,24)(21,27)(23,26)(1,2)(3,4)(5,7,8,12)(6,9,10,11)(13,14,17,20)(15,16,23,19)(18,21,27,28)(22,24,26,25)(2,4)(13,15)(14,19)(16,20)(17,23)(18,25)(21,26)(22,28)(24,27) involution — undirected(6,10)(7,12)(13,16,17,19)(14,15,20,23)(18,22,27,26)(21,25,28,24)(14,20)(15,23)(21,28)(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.