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