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