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