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