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