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