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