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