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