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