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