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