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