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