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)(17,18,22,25)(19,27,30,43)(20,24,32,40)(21,34,35,26)(23,36,38,29)(28,42,31,47)(33,48,44,41)(37,45,39,46)(9,10)(11,15)(12,14)(13,16)(17,19,21,29,22,30,35,36)(18,23,26,27,25,38,34,43)(20,31,33,45,32,28,44,46)(24,39,41,47,40,37,48,42)(2,5)(6,8)(9,11,12,16)(10,13,14,15)(17,20)(18,24)(19,28)(21,33)(22,32)(23,37)(25,40)(26,41)(27,42)(29,46)(30,31)(34,48)(35,44)(36,45)(38,39)(43,47)(11,16)(13,15)(19,29)(20,32)(21,35)(23,27)(24,40)(26,34)(28,45)(30,36)(31,46)(37,47)(38,43)(39,42) involution — undirected(1,3,4,7)(2,6,5,8)(10,14)(13,15)(18,25)(20,32)(23,38)(26,34)(27,43)(28,31)(33,44)(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.