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