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)(20,30,33,46)(21,35,36,48)(25,39,41,34)(26,29,42,32)(28,43,31,45)(38,47,40,44)(1,3)(2,6)(4,11)(5,10)(7,14)(8,9)(12,15)(13,16)(17,19,23,22)(18,24,27,37)(20,31,33,28)(21,29,36,32)(25,40,41,38)(26,35,42,48)(30,45,46,43)(34,47,39,44)(17,20,32,47,22,31,36,39,23,33,29,44,19,28,21,34)(18,25,35,43,24,38,42,46,27,41,48,45,37,40,26,30)(3,10)(6,9)(11,16)(14,15)(20,33)(25,41)(28,31)(30,46)(34,39)(38,40)(43,45)(44,47) involution — undirected(1,4,5,13)(2,7,8,12)(3,11,10,16)(6,14,9,15)(20,33)(25,41)(28,31)(30,46)(34,39)(38,40)(43,45)(44,47)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.