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)(35,43)(36,41)(37,48)(38,44)(39,45)(40,47)(42,46) 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)(34,40)(36,46)(37,44)(38,42)(39,47)(41,48)(43,45)(2,3)(7,9)(8,10)(15,16)(18,25)(19,29)(20,31)(27,32)(33,36,39,44)(34,41,45,38)(35,46,47,37)(40,48,43,42)(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)(33,37)(34,42)(35,36)(38,43)(39,46)(40,41)(44,47)(45,48)(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)(33,35)(34,43)(36,46)(37,44)(38,48)(39,47)(40,45)(41,42)(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)(33,38,39,41)(34,44,45,36)(35,42,47,48)(37,43,46,40)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.