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