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