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