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