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