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