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)(17,18,21,27,22,26,35,24)(19,23,30,36,28,38,44,39)(20,31,34,40,33,25,41,43)(29,42,45,48,32,37,46,47)(1,2)(3,7)(4,8)(5,6)(9,10)(11,15)(12,14)(13,16)(17,19)(18,23)(20,32)(21,30)(22,28)(24,39)(25,42)(26,38)(27,36)(29,33)(31,37)(34,46)(35,44)(40,47)(41,45)(43,48) involution — undirected(1,3,5,4)(2,7,6,8)(9,11,12,16)(10,13,14,15)(18,24)(19,28)(20,33)(21,35)(23,36)(25,43)(26,27)(31,40)(37,48)(38,39)(42,47)(45,46)(1,3,5,4)(2,8,6,7)(11,16)(13,15)(17,20)(18,25)(19,29)(21,34)(22,33)(23,37)(24,40)(26,31)(27,43)(28,32)(30,45)(35,41)(36,47)(38,42)(39,48)(44,46)(1,4,5,3)(2,8,6,7)(10,14)(13,15)(18,26)(19,28)(20,33)(24,27)(30,44)(34,41)(37,42)(47,48)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.