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