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