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