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