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