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