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