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