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