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