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