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