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