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