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