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