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)(19,27)(20,31)(21,26)(22,23)(24,30)(25,29)(28,32)(33,34,38,41)(35,39,42,46)(36,37,40,45)(43,44,47,48)(1,2,6,3)(4,7,12,9)(5,8,13,10)(11,14,16,15)(17,19,23,30)(18,24,22,27)(20,28,29,21)(25,32,31,26)(33,35)(34,39)(36,43)(37,44)(38,42)(40,47)(41,46)(45,48)(5,13)(8,10)(11,16)(14,15)(18,22)(24,27)(25,31)(26,32)(35,42)(39,46)(43,47)(44,48) involution — undirected(1,3,6,2)(4,7,12,9)(5,10,13,8)(11,14,16,15)(17,20)(18,25)(19,28)(21,30)(22,31)(23,29)(24,32)(26,27)(33,36)(34,37)(35,43)(38,40)(39,44)(41,45)(42,47)(46,48)(1,4,6,12)(2,7,3,9)(5,11,13,16)(8,14,10,15)(17,21,23,28)(18,26,22,32)(19,29,30,20)(24,31,27,25)(33,37)(34,40)(35,44)(36,41)(38,45)(39,47)(42,48)(43,46)(1,5,6,13)(2,8,3,10)(4,11,12,16)(7,14,9,15)(17,22,23,18)(19,27,30,24)(20,31,29,25)(21,32,28,26)(33,35)(34,39)(36,43)(37,44)(38,42)(40,47)(41,46)(45,48)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.