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