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