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