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