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