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