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