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