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