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