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