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)(20,27)(22,28)(23,30)(25,31)(33,34)(35,37)(36,43)(38,42)(39,44)(40,46)(41,47)(45,48)(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)(33,35,37,34)(36,41,45,39)(38,40,46,42)(43,47,48,44)(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)(33,36)(34,39)(35,41)(37,45)(38,47)(40,48)(42,43)(44,46) 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)(34,35)(39,41)(40,42)(43,48)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.