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