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