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