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