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