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