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