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