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