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