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