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