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