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