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