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