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