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