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