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