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