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)(19,24)(20,25)(21,26)(22,23)(27,32)(28,30)(29,31)(34,36)(35,41)(37,45)(47,48) involution — undirected(10,13)(14,16)(18,23)(19,25)(21,29)(28,32)(33,34,38,36)(35,39,41,43)(37,40,45,44)(42,47,46,48)(9,10,12,13)(11,14,15,16)(17,19,22,25)(18,24,23,20)(21,30,29,27)(26,28,31,32)(33,35)(34,39)(36,43)(37,46)(38,41)(40,48)(42,45)(44,47)(1,2)(3,6)(4,5)(7,8)(17,20,22,24)(18,25,23,19)(21,28,29,32)(26,30,31,27)(33,36,38,34)(35,39,41,43)(37,44,45,40)(42,47,46,48)(1,3,4,7)(2,6,5,8)(9,11,12,15)(10,14,13,16)(17,21,22,29)(18,26,23,31)(19,27,25,30)(20,28,24,32)(33,37)(34,40)(35,42)(36,44)(38,45)(39,47)(41,46)(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.