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