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