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