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