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