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