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