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