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