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