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