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)(25,32)(26,37)(29,41)(30,39)(33,46)(34,38)(36,42)(40,43)(44,47)(45,48)(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)(21,30,37,36)(25,31,41,38)(26,39,35,42)(33,45,47,43)(40,44,48,46)(11,15)(13,16)(17,20,23,32,22,34,19,29)(18,25,27,31,28,41,24,38)(21,33,36,45,37,47,30,43)(26,40,42,44,35,48,39,46)(2,6)(5,7)(17,21)(18,26)(19,30)(20,33)(22,37)(23,36)(24,39)(25,40)(27,42)(28,35)(29,43)(31,44)(32,45)(34,47)(38,46)(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)(25,31,41,38)(26,39,35,42)(33,45,47,43)(40,46,48,44)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.