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