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