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