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