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