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