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