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