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