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