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