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