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