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