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