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