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