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)(19,22)(20,23)(21,24)(25,29)(26,30)(27,31)(28,32)(33,34)(35,40)(36,45)(37,42)(38,47)(39,41)(43,44)(46,48)(4,11)(8,14)(10,15)(12,16)(17,18,21,24)(19,22,25,29)(20,23,28,32)(26,30,27,31)(33,35)(34,40)(36,46)(37,39)(38,44)(41,42)(43,47)(45,48)(2,7)(3,9)(8,14)(10,15)(19,25)(22,29)(26,27)(30,31)(34,41)(35,37)(36,47)(44,48) involution — undirected(1,3)(2,5)(4,10)(6,9)(7,13)(8,12)(11,15)(14,16)(17,18)(19,22)(20,23)(21,24)(25,29)(26,30)(27,31)(28,32)(33,36)(34,38)(35,43)(37,46)(39,47)(40,48)(41,45)(42,44) involution — undirected(1,4)(2,8)(3,10)(5,12)(6,11)(7,14)(9,15)(13,16)(17,19,21,25)(18,22,24,29)(20,27,28,26)(23,31,32,30)(33,37,39,35)(34,42,41,40)(36,46,47,43)(38,44,45,48)(1,5)(2,3)(4,12)(6,13)(7,9)(8,10)(11,16)(14,15)(17,20,21,28)(18,23,24,32)(19,26,25,27)(22,30,29,31)(33,38)(34,36)(35,44)(37,48)(39,45)(40,46)(41,47)(42,43)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.