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