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