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