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