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