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