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