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