One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,9,10,6)(4,12,13,7)(11,14,16,15)(17,18,23,27)(19,24,22,37)(20,30,32,44)(21,35,36,48)(25,39,40,33)(26,29,41,31)(28,42,34,47)(38,46,45,43)(1,3)(2,6)(4,11)(5,10)(7,14)(8,9)(12,15)(13,16)(17,19,23,22)(18,24,27,37)(20,28,32,34)(21,29,36,31)(25,38,40,45)(26,35,41,48)(30,42,44,47)(33,43,39,46)(17,20,31,46,22,34,36,39,23,32,29,43,19,28,21,33)(18,25,35,42,24,38,41,44,27,40,48,47,37,45,26,30)(3,10)(6,9)(11,16)(14,15) involution — undirected(1,4,5,13)(2,7,8,12)(3,11,10,16)(6,14,9,15)(20,32)(25,40)(28,34)(30,44)(33,39)(38,45)(42,47)(43,46)A 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.