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