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