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