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