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