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