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