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