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