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