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