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